MF-18. 0.5 km north and 1.5 km east of Scopus (Seopus) (Ordovician of the United States)

Also known as Just north of farmhouse 0.8 km northeast of junction of gravel road with country road UU

Where: Bollinger County, Missouri (37.4° N, 89.9° W: paleocoordinates 25.2° S, 76.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Smithville Formation, Cassinian (482.3 - 470.0 Ma)

• N. American E Fauna, Reutterodus andinus zone, middle Blackhillsian.

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, hydrochloric

Primary reference: M. F. Fix. 1975. The Paleontology and stratigraphy of the Smithville and Blackrock Formations of Southeastern Missouri. M.S. Thesis, Geology, Washington University 1-147 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 75557: authorized by Pete Wagner, entered by Pete Wagner on 16.10.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Gastropod indet.
includes one new sinistral or hyperstrophic gastropod.
Rhynchonellata
 Orthida - Finkelnburgiidae
Paragastropoda
 Mimospirida - Clisospiridae
? Mimospira "n. sp." Koken and Perner 1925
Cephalopoda
  -
Cephalopoda indet. Cuvier 1797
Gastropoda
 Euomphalina - Raphistomatidae
Ceratopea unguis Yochelson and Bridge 1957 snail
23 opercula, 1 shell
 Euomphalina - Helicotomidae
Lophonema sp. Purdue and Miser 1916 snail
Lophonema aff. taneyensis Cullison 1944 snail
Lophonema cf. circumlirata Whitfield 1886 snail
 Euomphalina - Macluritidae
"Maclurites smithvillensis" = Teiichispira ponderosa
"Maclurites smithvillensis" = Teiichispira ponderosa Billings 1865 snail
 Murchisoniina - Lophospiridae
Lophospira indet. Whitfield 1886 snail
Lophospira perangulata Hall 1847 snail
 Murchisoniina - Subulitidae
Fusispira obesus Whitfield 1886 snail
 Murchisoniina - Hormotomidae
Hormotoma artemesia Billings 1865 snail
Hormotoma confusa Whitfield 1889 snail
Hormotoma anna Billings 1859 snail
 Murchisoniina - Eotomariidae
"Murchisonia (Turritoma) cf. acrea" = Turritoma acrea
"Murchisonia (Turritoma) cf. acrea" = Turritoma acrea Billings 1865 snail
Ostracoda
 Leperditicopida - Isochilinidae
Ceratoleperditia sp. Harris 1960 ostracod
 Leperditicopida - Leperditiidae
? Eoleperditia "sp. A" Swartz 1949 ostracod
? Eoleperditia "sp. B" Swartz 1949 ostracod